Warren Buffett and Mark Cuban, both billionaires, had lunch together at an Omaha Dairy Queen on Monday, sending local folks, sports writers and financial pages into a tizzy. They reportedly talked basketball. Cuban owns the Dallas Mavericks. Mark Cuban/Instagram

Warren Buffett and Mark Cuban, both billionaires, had lunch together at an Omaha Dairy Queen on Monday, sending local folks, sports writers and financial pages into a tizzy. They reportedly talked basketball. Cuban owns the Dallas Mavericks. Mark Cuban/Instagram

One of his Instagram fans wrote, "Please consider a presidential run."

Omaha residents are accustomed to seeing Buffett — known as "The Oracle of Omaha" — out and about. Some might even remember that time in 2014 when he was seen hanging out on a bench in midtown Omaha with none other than Paul McCartney.

And just like then, seeing the chairman and CEO of Berkshire Hathaway with Cuban sent folks scrambling to take photos — and apparently to eavesdrop.

"They seemed friendly," Omaha resident Clark Ruby told KETV in Omaha after he managed to grab a selfie with the two men.

"LeBron James to the Dallas Mavericks?" the newspaper wondered, noting that Buffett is good friends with the Cleveland Cavaliers star.

Buffett's office would not disclose what else the two men talked about, the newspaper reported.

Buffett reportedly likes to eat at Dairy Queen. It's his, after all. Fox Business notes that Berkshire Hathaway acquired Dairy Queen in 1998 and that Buffett is known to be loyal to brands he invests in, including Coca-Cola.